Naked Science Forum
Non Life Sciences => Chemistry => Topic started by: holly09 on 29/06/2009 20:37:54
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Hi all. I really need the answer to this question.
A stock solution of aluminium is to be prepared by dissolving 12346mg of Al2(SO4)3.18H2O in water and made up to 1000ml. What is the concentration of Al in this stock solution? The molecular weight of the compound is 666.4 and the atomic weight of Al is 26.98. From these I have worked out that there is 499.8 mg/l Al in the solution.
Is this correct or do I need to include something else in this calculation. Help [:(]
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Close.
You forgot to count the Aluminium atoms in the molecule.
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how do i do that [:-[] do i multiply by 2 giving me an almost 1000ppm solution?
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Yes, that sounds right.
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Thanks for your post. It’s really useful [O8)].
Spammy Spam, banned and blacklisted!
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Yeah, and thanks for your hidden spam message [O8)]